Police arrested a man for throwing a lighter onto the pitch during Chelsea's FA Cup win over Manchester City at Stamford Bridge on Sunday, while investigations continue into coin-throwing at visiting players.

Objects were thrown when David Faupala celebrated with City teammates in the corner of the pitch, near Chelsea fans, after scoring on his debut in the first half of a match that the hosts went on to win 5-1.

Barcelona's main title rivals both faltered in Spain and a referee grabbed the headlines in Germany on Sunday when he stopped a game because a coach refused to leave the pitch.

Fiorentina consolidated third place in Serie A and Roma bounced back from its Champions League defeat to Real Madrid with its fifth successive league win.

World boxing star Manny Pacquiao's April 9 bout with Timothy Bradley came under a cloud Monday when the Philippine elections commission was asked to stop the Las Vegas match because it would give the Filipino slugger and senatorial candidate massive publicity.

Former Rep. Walden Bello, also a senatorial candidate in the May 9 elections, said in his petition to the Commission on Elections that allowing the welterweight fight to proceed during the campaign period would violate a law giving candidates equal access to media publicity and a ban on TV and radio programs favoring a candidate.

Defending champion Lewis Hamilton was the first car out on the track Monday as Formula One returned to action with preseason testing in Barcelona.

Hamilton didn't waste time getting in the driver's seat to try out the new Mercedes that he will attempt to drive to a third consecutive championship this year.

New Brooklyn Nets general manager Sean Marks of New Zealand made his first move on Saturday, waiving Italian forward Andrea Bargnani, a 10-year NBA veteran who has struggled this season.

Bargnani, who signed with the Nets last July, averaged 6.6 points and 2.1 rebounds in 13.8 minutes over 46 games this season.

Reigning NBA champion Golden State bounced back from losing for only the fifth time this season for an emotional 115-112 road victory Saturday over the Los Angeles Clippers.

Klay Thompson scored 32 points while Stephen Curry added 23 points and nine assists, and Draymond Green contributed 18 points, 11 rebounds and 10 assists to lead the Warriors, who own the NBA's best record at 49-5.

Ferrari's ability to challenge Lewis Hamilton and Mercedes' dominance of Formula One will be examined as the longest season in the sport's history gets underway with the first series of testing in Barcelona on Monday.

Hamilton is looking for a third consecutive drivers' championship and the fourth of his career across a mammoth 21 Grand Prix season that starts in Australia on March 20.

Arsene Wenger accepted his Arsenal side must be more ruthless against Barcelona than they were against Hull when the Champions League holders arrive at the Emirates Stadium on Tuesday.

Wenger’s team were left frustrated as they were held to a scoreless draw by second-tier side Hull City in the fifth round of the FA Cup ahead of the first leg of their Champions League last 16 tie against the Catalans.

Barcelona moved nine points clear at the top of La Liga thanks to first-half goals from Luis Suarez and Neymar despite an unconvincing display in a 2-1 win at Las Palmas on Saturday.

Suarez opened the scoring early on with his 41st goal of the season, but Willian Jose deservedly levelled for the hosts inside 10 minutes.

Argentine Mauro Icardi struck late as Inter Milan got back to winning ways under the watchful eyes of former coach Jose Mourinho and striker Ronaldo with a 3-1 win over Sampdoria on Saturday.

Inter had secured just one victory in their past seven games and were especially desperate for a win after falling to Khouma Babacar's late strike in a 2-1 reverse at Fiorentina last week.